The official Twitter app has become quite good in design and features. It can not beat Tweetbot except concerning the price, but the difference in features and design are not as big anymore as they were half a year ago.

Price

Caution: The price ratio has changed a lotsince the author compared these apps.

Eyecandy design

Very good interface, not only visual also indicating sounds

Design

Very nice design

Instant streaming

In-app image and video preview

Direct messages

Multiple Timelines

Customizable Navigation

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